In order to obtain acoustic features, Log Mel energy features are extracted in the same way as [1]} using 96 ms Hamming window and 50% overlap. 64 log Mel energies are calculated for each audio frame as \(\textbf {A}\in \mathbb {R}^{T\times M}\) , where \(M\)  is the number of Mel bins and \(T\)  is the number of windows in the audio clip.
